1 /*
2 * Copyright STMicroelectronics, 2007.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19 #include <linux/types.h>
20 #include <linux/init.h>
21 #include <linux/device.h>
22 #include <linux/amba/bus.h>
23 #include <linux/platform_device.h>
24 #include <linux/gpio.h>
25
26 #include <mach/hardware.h>
27 #include <mach/irqs.h>
28 #include <asm/mach/map.h>
29 #include <asm/hardware/vic.h>
30
31 #include <asm/cacheflush.h>
32 #include <asm/hardware/cache-l2x0.h>
33
34 #include "clock.h"
35
36 #define __MEM_4K_RESOURCE(x) \
37 .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
38
39 /* The 8815 has 4 GPIO blocks, let's register them immediately */
40
41 #define GPIO_RESOURCE(block) \
42 { \
43 .start = NOMADIK_GPIO##block##_BASE, \
44 .end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \
45 .flags = IORESOURCE_MEM, \
46 }, \
47 { \
48 .start = IRQ_GPIO##block, \
49 .end = IRQ_GPIO##block, \
50 .flags = IORESOURCE_IRQ, \
51 }
52
53 #define GPIO_DEVICE(block) \
54 { \
55 .name = "gpio", \
56 .id = block, \
57 .num_resources = 2, \
58 .resource = &cpu8815_gpio_resources[block * 2], \
59 .dev = { \
60 .platform_data = &cpu8815_gpio[block], \
61 }, \
62 }
63
64 static struct nmk_gpio_platform_data cpu8815_gpio[] = {
65 {
66 .name = "GPIO-0-31",
67 .first_gpio = 0,
68 .first_irq = NOMADIK_GPIO_TO_IRQ(0),
69 }, {
70 .name = "GPIO-32-63",
71 .first_gpio = 32,
72 .first_irq = NOMADIK_GPIO_TO_IRQ(32),
73 }, {
74 .name = "GPIO-64-95",
75 .first_gpio = 64,
76 .first_irq = NOMADIK_GPIO_TO_IRQ(64),
77 }, {
78 .name = "GPIO-96-127", /* 124..127 not routed to pin */
79 .first_gpio = 96,
80 .first_irq = NOMADIK_GPIO_TO_IRQ(96),
81 }
82 };
83
84 static struct resource cpu8815_gpio_resources[] = {
85 GPIO_RESOURCE(0),
86 GPIO_RESOURCE(1),
87 GPIO_RESOURCE(2),
88 GPIO_RESOURCE(3),
89 };
90
91 static struct platform_device cpu8815_platform_gpio[] = {
92 GPIO_DEVICE(0),
93 GPIO_DEVICE(1),
94 GPIO_DEVICE(2),
95 GPIO_DEVICE(3),
96 };
97
98 static struct amba_device cpu8815_amba_rng = {
99 .dev = {
100 .init_name = "rng",
101 },
102 __MEM_4K_RESOURCE(NOMADIK_RNG_BASE),
103 };
104
105 static struct platform_device *platform_devs[] __initdata = {
106 cpu8815_platform_gpio + 0,
107 cpu8815_platform_gpio + 1,
108 cpu8815_platform_gpio + 2,
109 cpu8815_platform_gpio + 3,
110 };
111
112 static struct amba_device *amba_devs[] __initdata = {
113 &cpu8815_amba_rng
114 };
115
cpu8815_init(void)116 static int __init cpu8815_init(void)
117 {
118 int i;
119
120 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
121 for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
122 amba_device_register(amba_devs[i], &iomem_resource);
123 return 0;
124 }
125 arch_initcall(cpu8815_init);
126
127 /* All SoC devices live in the same area (see hardware.h) */
128 static struct map_desc nomadik_io_desc[] __initdata = {
129 {
130 .virtual = NOMADIK_IO_VIRTUAL,
131 .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
132 .length = NOMADIK_IO_SIZE,
133 .type = MT_DEVICE,
134 }
135 /* static ram and secured ram may be added later */
136 };
137
cpu8815_map_io(void)138 void __init cpu8815_map_io(void)
139 {
140 iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
141 }
142
cpu8815_init_irq(void)143 void __init cpu8815_init_irq(void)
144 {
145 /* This modified VIC cell has two register blocks, at 0 and 0x20 */
146 vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
147 vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
148
149 /*
150 * Init clocks here so that they are available for system timer
151 * initialization.
152 */
153 clk_init();
154 }
155
156 /*
157 * This function is called from the board init ("init_machine").
158 */
cpu8815_platform_init(void)159 void __init cpu8815_platform_init(void)
160 {
161 #ifdef CONFIG_CACHE_L2X0
162 /* At full speed latency must be >=2, so 0x249 in low bits */
163 l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
164 #endif
165 return;
166 }
167